Which of the following fields cannot be updated from an update request?

Formulas are calculated fields in Smartsheet based on other data within the sheet. Because they derive their values through calculations rather than direct user input, they cannot be modified directly through an update request. When a user submits an update request, they are providing input on tasks or specific data, which can influence fields like completed tasks, comments, and attachments. However, since formulas calculate their values automatically based on existing data, they remain unchanged in the update process.

This understanding highlights the distinction between user-editable fields and calculated fields in project management tools like Smartsheet. As users work on their projects and respond to update requests, they provide necessary information for tracking progress and collaboration, while the formulas continue to operate in the background to generate real-time insights based on the most current data in the sheet.